AN ASSISTIVE DEVICE THAT ALTERS THE PITCH AND PLAYS THE WORDS BACK MILLISECONDS LATER.

WHAT IS AN ALTERED AUDITORY FEEDBACK DEVICE?
THEY ARE ELECTRONIC DEVICES INTENDED TO IMPROVE THE FLUENCY OF PEOPLE WHO STUTTER; MOST ELECTRONIC FLUENCY DEVICES CHANGE THE SOUND OF THE USER'S VOICE IN HIS / HER EAR.